Lua APA (7ú heag.)

Guth,David, & Marsh,Charles. (2017). Public relations: A values-driven approach (6th.). Pearson.

Lua i Stíl Chicago (17ú heag.)

Guth,David, agus Marsh,Charles. Public Relations: A Values-driven Approach. 6th. New York: Pearson, 2017.

Lua MLA (9ú heag.)

Guth,David, agus Marsh,Charles. Public Relations: A Values-driven Approach. 6th. Pearson, 2017.

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